Invention Grant
- Patent Title: Method and apparatus for removing a particle from a photolithographic mask
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Application No.: US17074042Application Date: 2020-10-19
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Publication No.: US11429020B2Publication Date: 2022-08-30
- Inventor: Christof Baur , Hans Hermann Pieper
- Applicant: Carl Zeiss SMT GmbH
- Applicant Address: DE Oberkochen
- Assignee: Carl Zeiss SMT GmbH
- Current Assignee: Carl Zeiss SMT GmbH
- Current Assignee Address: DE Oberkochen
- Agency: Fish & Richardson P.C.
- Priority: DE102018206278.1 20180424
- Main IPC: G03F1/82
- IPC: G03F1/82 ; G03F7/20

Abstract:
The present application relates to a method for removing a particle from a photolithographic mask, including the following steps: (a) positioning a manipulator, which is movable relative to the mask, in the vicinity of the particle to be removed; (b) connecting the manipulator to the particle by depositing a connecting material on the manipulator and/or the particle from the vapor phase; (c) removing the particle by moving the manipulator relative to the photolithographic mask; and (d) separating the removed particle from the manipulator by carrying out a particle-beam-induced etching process which removes at least a portion of the manipulator.
Public/Granted literature
- US20210048744A1 METHOD AND APPARATUS FOR REMOVING A PARTICLE FROM A PHOTOLITHOGRAPHIC MASK Public/Granted day:2021-02-18
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